Evaluating Rodent Models for Cancer Research
Author Information
Author(s): Barrett Julia R.
Primary Institution: National Institute of Environmental Health Sciences
Hypothesis
Are current rodent bioassays adequate for evaluating hormonally mediated tumors?
Conclusion
The workshop concluded that current rodent models have deficiencies but are still valuable for cancer research.
Supporting Evidence
- Rodent models are valuable but have certain deficiencies.
- Many hormonally mediated tumors are initiated in fetal or early neonatal life, which is not covered in standard bioassays.
- The NTP has committed to including perinatal exposures in studies unless justified otherwise.
- Some rat and mouse strains do not develop certain tumors or have high spontaneous tumor incidences.
- Participants recommended using alternative models to address deficiencies in rodent testing.
Takeaway
Scientists are trying to figure out if the way we test for cancer in rats and mice is good enough, especially for cancers that are affected by hormones.
Methodology
The workshop evaluated the utility of two-year rodent bioassays and discussed the inclusion of perinatal exposures.
Limitations
Rodent models may not adequately represent human disease due to anatomical and tumor prevalence differences.
Participant Demographics
Participants included representatives from academia, industry, government, and nonprofit groups, as well as experts in various fields.
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